1.1 --- a/MYKey-iPhone.m	Tue Apr 07 10:56:58 2009 -0700
     1.2 +++ b/MYKey-iPhone.m	Thu Apr 09 22:46:48 2009 -0700
     1.3 @@ -109,6 +109,35 @@
     1.4  }
     1.5  
     1.6  
     1.7 +
     1.8 +
     1.9 +/** Asymmetric encryption/decryption; used by MYPublicKey and MYPrivateKey. */
    1.10 +- (NSData*) _crypt: (NSData*)data operation: (BOOL)operation {
    1.11 +    CAssert(data);
    1.12 +    size_t dataLength = data.length;
    1.13 +    SecKeyRef key = self.keyRef;
    1.14 +    size_t outputLength = MAX(dataLength, SecKeyGetBlockSize(key));
    1.15 +    void *outputBuf = malloc(outputLength);
    1.16 +    if (!outputBuf) return nil;
    1.17 +    OSStatus err;
    1.18 +    if (operation)
    1.19 +        err = SecKeyEncrypt(key, kSecPaddingNone,//PKCS1, 
    1.20 +                            data.bytes, dataLength,
    1.21 +                            outputBuf, &outputLength);
    1.22 +    else
    1.23 +        err = SecKeyDecrypt(key, kSecPaddingNone,//PKCS1, 
    1.24 +                            data.bytes, dataLength,
    1.25 +                            outputBuf, &outputLength);
    1.26 +    if (err) {
    1.27 +        free(outputBuf);
    1.28 +        Warn(@"%scrypting failed (%i)", (operation ?"En" :"De"), err);
    1.29 +        // Note: One of the errors I've seen is -9809, which is errSSLCrypto (SecureTransport.h)
    1.30 +        return nil;
    1.31 +    } else
    1.32 +        return [NSData dataWithBytesNoCopy: outputBuf length: outputLength freeWhenDone: YES];
    1.33 +}
    1.34 +
    1.35 +
    1.36  @end
    1.37  
    1.38